Thread guide for shuttles and the like



Nov. 6, 1928;

J. B. DAUDELIN THREAD GUIDE FOR SHUTTLES AND THE LIKE Filed 001;. 18, 1926 Patented Nov. 6, 1928.

'Umreoj STATES P TENT .o ricE.

JEAN BInAUnELm, or FALL. RIVER, MASSACHUSETTS.

THREAD GUIDE FOR SEIUTTLES AND THE LIKE.

Application filed October 13, 1926. Serial 110. 142235 This invention relates to tension devices and in the selected embodiment to tensions for shuttles and as such involves certain improvements over my prior shuttle of my earlier Let ters Patent in 1,508,507, dated'September In such a shuttlethe problem 18 to maintain a uniform tension in the weft as it IS drawn from the weft carrier to the shuttle eye and at the same time properly to guide,

' the shuttle between the weft carrier and shuttlereye and having a tension portion or bar extendingforwardly and anchored in the wood ofthe shuttle throat beyond the thread 'ing slot of the shuttle, so that as the weft unspools it wraps itself in one or more turns about this forwardlyextending tension bar while working its'way towards the cente r of the helix. c a

Heretofore experiments have been made with a spirallywound wire in an effort to produce a satisfactory eft tension guide-but this did not prove practical in use due to the fact that the thread looped around the wire i and broke. In my present invention I secure the advantagessought in the spirally wound wire construction. My construction is entirely practical and has been submitted to long test.

The constructionand operation of my invention, together, with a suitable illustrative embodiment thereofjis described and shown in the. accompanying specification and drawings, and the particular features of novelty are pointed out in the appended claims. In the drawings z Fig. 1 is a plan view atthe'threading; end

of a loom shuttle of standard type equipped in accordancewith my present lIIVGIIlTlOII.

2 is a section on the line 22,of Fig. 1. FigiBis'a sideele'vatio'n of the combination weft tensio'ning and guiding device, removed.

'- to the shuttle.

Fig. 4 is an end view thereof, and

Figsfi and-6 are detail views of the eyepiece, removed.

I have indicated generally at l the threading end of. a shuttle of conventional type, at 2 the shuttle throat, at 3 the weft carrier, at l the shuttle eye, and at 5 and 6 the usual threading slot connecting the shuttle throat with the, outer end .of theshuttle eye.

My, combination 'tensioning device. and weft guide consists of a helix 7 of flat metal in the form of a plurality of helically wound spaced turns. This helix is positioned,verti,- cally in the longitudinal axis of theshuttle between the weft carrier and the shuttle eye and the turns of the helix are preferably disposed in a direction opposite to the unspoolinn action of the weft, so that theweft unwinds. from the weft carrier it auton'iatically tends to find. its way towards the center of the helix where it'is held. against improper escape. T he helix itself may be mounted in any suitable manner in the bobbin chamber of the shuttle, and the opposite side walls of the chamber adjacent the outermost turn of the helix may be lined as indicated at 8 with any suitable cushioning material, felt, fur or thelike. v d

Extending longitudinally from the center of the helix towards the forward end of the shuttle. is a weft tensioning bar 9 which is preferably bent upon itself at substantially rightangles, as indicated at 10, to provide an 7 anchoring pin adapted to'be driven into the wood of the shuttle slightly in advance of the curved threading slot 5 and clinchedwithin the shuttle, s indicated atoll. in Fig. 2 whereby to anchor the helix in position.

The, eyepiece 12 consists of a porcelain or other member formed to key within the shuttle eye whereby rotation of theeye piece in the eye is prevented. For this purpose, the

eye piece is provided with a longitudinally 'key fits within a transversekeyway formed in the shuttle body by counterboring the eye l,

and prevents rotationof the eyepiece within the eye. I I

Theweft W from the weft carrier passes through the -port-lsl and in the threading action of the shuttle is drawn around that part ofthe key indicated at 13 as a snubbmg piece through a threading slot 15-, which is post and laterally outwardly along the eye 7 channeled in the inaterialof the eye piece itself. p

In the threading action of the shuttle, the weft is initially laid between the frecor outer most turn of the helix indicated at 7 Fig. 4 (located at the left side of the shuttle in Fig.

.1), passing beneath theotensioning. bar 9 ans into the curved part 5 ofthe threaded slot.

-As the weft is driven down into said slot and along the horizontally extending portion 6 thereof, and into the eye piece, it gradually works its way inwardly towards the center ofthe helix wrapping itself in one or more turns about the tensioning bar 9. In this action, ,the weft will wrap or twist itsel" around the tensioning bar 9 in as many turns as there are turns in'the helical coil 7. I

This not only insures aproper tensioning of the weft, but also guides the weft properly to the eye piece and prevents improper escape of the'weft during the run of the shuttle. The Width of the metal on the coil maybe varied according to the conditions of use.

The fiat construction of my coil prevents the" willbe understood that the invention iscapableof more extendedapplication and that oning element around which the weft the shuttle form herein shown and described is intended to be generally illustrative while showing an embodiment ofpractical utility. TV hat I therefore'claiin and desire to secure by Letters Patent is: I

1. In a shuttle having a weft carrier and a delivery eye, a thread guide disposed be tween said weft oar'rier'and eye and consist ing of a plurality of spaced, flat turns disposed in broadside'relation to each other and woundin a direction opposite to the unspooling action of the weft delivering fromsaid weft carrier whereby the weft in unspooling will automatically worlr itself towards the center of the "guide, said guidehaving a tenwraps itself as it enters said guide. 3 i

2. In a shuttle having a weft carrier and a delivery eye, a thread-guide disposed between said weft carrier and eye and consisting of a 'plurality'of spaced, flat turns dis+ posed in broadside relation to each other and wound in a direction opposite to the unspooling action of the weft deliverlng from said weft carrier whereby the Weft in unspooling will automatically work itself towards the center of the guide, one end of said guide extended to provide a tensioning bar around WVlllCll the weft wraps tself as it enters said guide.

3. In a shuttle having a weft carrierand a delivery eye, a thread guide disposed between said weft carrier and eye and consisting of a plurality of spaced, flat turns disposed in broadside relation to each other and-wound in a direction opposite to the unspooling action of the weft delivering from said weft carrier whereby the weft in unspoo'ling will automaticallywork itself towards the center of the guide, one end of said guide ex tended to provide a tensioning bar around which theweft wraps itself in aplurality of turns equal to the number of convolutions of the guide as it enters the guide.

l. In, an automatically threading shuttle having a weft carrier, aneye, and a threader 1 located between said 'weft carrier and eye, a guide carried by said threader and consisting ofa plurality of spaced fiat turns disposed" in broadsi de relation to each other andlaid in a direction opposite to the unspoolingacticn of the weft whereby the weft will automatically work itself inwardly towards the center of the guide as it runs from the weft carrier, one end of said guide extendedto provide a tensioning bar around which the weft wraps itself. a

5. i-Lthread guide and tension device for thread delivery with a wound body of thread consisting of a plurality of spaced, flat turns dis}? in broadside relation to ch other and wound in a direction opposite to the thread wind, said guide having a tension element disposed to r'eceivethe wrap "of the thread as guided in said helix. I

p .6. A thread guide and tension dev-ice for thread delivery with a wound body of thread consisting of aplurality of spacethtlat, turns disposed in broadside relation to each other andof predetermined width woundin a direction opposite to the unspooling action of the thread, said' guide having a tension element disposed to receive thev wrap of the thread as guided in said helix.

7. A thread guide andtension device for a wound'body of thread consistingof a helix having a plurality of spaced, flat, turns dis posed in broadside-relationto each other and wound in a direction opposite tothe unspooling-action of the thread, said guidehaving a tension element disposed in the axis of the helix and about which as a generative center the turnsof the helix aresubstantially described." p l Intestimony whereof I affix'iny signature.

. w s -rave s. 

